Lock.



1. H. sHAw.

LOCK. APPLICATION FILED JALQI. I918.

Patented May 6, 1919:

2 SHEETS-SHEET I INVENTOR ATTORNEY .J. H. ,SHAW.

LOCK.

APPLICATION ElLED IAN.3I. I918.

Patented May 6, 1919.

Z $HEET$-$HEET 2 INVENTQR ATTORNEY UNITED STATES PATENT OFFICE.

JOHN H. SHAW, or new HAVEN, CONNECTICUT, Assrenoa To sanennr & ooiviranv, OF NEW HAVEN, oolv vnorxour, A coiaronarron or. oonnnc'rroor.

LOCK.

Patented May 6, 1919.

Application filed January 31, 1918. Serial No. 214,765.

To all whom it may concern Be it known that I, JOHN H. SHAW, a citizen of the United States, residing in the city and county of New Haven, State of Conneoticut, have invented certainnew and useful Improvements in Locks, of Which the following is a full, clear, and exact description. I t

This invention relates to looks, and more particularly to the type of mortise lock having inside and outside dead bolts, with operating means whereby the inside dead bolt may be retracted by protracting the outside dead bolt. l

A number of the mortise locks now in general use, especially in hotels, are provided with what are known as inside and outsidedead bolts, the arrangement being such that one of the bolts, known as the outside bolt, is operated by insertingthe key in the key hole from the 'outsideofthe door, and the inside bolt is operated by a key inserted from the inside of the door. This type of lock is usually provided with additional means whereby it is possible to retract the inside bolt by protracting the outside bolt. This arrangement is often necessary, in order that it may be possible to unlook a door from the outside of the same in case the person inside the room has been.

taken ill. or for some otherreason fails to unlock the inside bolt when it is necessary to enter the room. y l y l The object of my invention is to provide the type of mortise lockfjust referred to with means which will makeit very difficult to retract the inside bolt by protracting the outside bolt with any key except the one that is especially designed for this purpose. Moreparticularly, the object ofmy invention is to form what I have termed a float ing ward upon the rearend of' the inside bolt, so that when this bolt is'protracted the floating ward is moved into the path of rotation of the bitof the outside key, so that none of the keys of the series provided for the look, when inserted from the outside of the door, canbe turned in the lock, except the key the bit of which is so constructed that it will clear the ward, which key is usually the one possessing the highest order of the whole series.

To these and other ends, the invention consists in thenovel features and combinations of parts to be hereinafter described and claimed. f

In the accompanying drawings: a Figure l is an elevation of a lock embodylng my lmprovements, theinside dead bolt being shown protracted, and a part of the cap plate being broken away in order to disclose more clearly my improved mechanism; j y y l 1 Fig. 2 is a view similar to Fig. 1, showing the nside dead bolt in its retracted position;

:Fig. is a rear edgeview of the lock shown 1n Fig. .1, a portion of the mortise lock case being broken away in order that the cooperation between the floating ward and key maybe clearly seen;

Fig. 4 is a sideview ofthe inside dead bolt removed fromits lock;

h Fig.5 1s a rear end view of this bolt; and

. Figs. 6 and 7 are views of two of the keys with which my lock is provided. a

. Referring to the drawings, the case 10 of the lock is provided with an outside bolt 11 and an inside bolt 12. The former bolt is adapted to be operated under dilferent con ditions by any one of a series of keys, one of which is designated as 13, Fig. 6, and another as 13, Fig. 7 The other dead bolt 12 is adapted to be operated by the same keys or by another key 14. The bolt 11 is preferably provided with a number of locking tumblers and other cooperating parts with which looks of this type are usually provided, which parts have not been shown since they in no way relate to my particular improvement.

The inside dead bolt 12 is provided with thetalons 15, by means'of which the. bolt maybe operated by the key 14 inserted from the inside of the door. This bolt is also provided with a notch 16, which cooperates with a stump orpost 17, by means of which the outward and inward movement of the bolt is limited. The bolt 12 is further provided with the tumbler 18, which is pivotally mounted onthe projecting lug or pin 19 and cooperates with the stump 17. The lock is further provided with adever 19', whereby, if the outside bolt is shot forward while the inside bolt is protracted, the outward movementof the outside bolt will retract theinside bolt. This connecting lever is not illustrated in detail, since its use and operation of lock herein described is usually provided;

can be rotated in the lock to protract the outside bolt While the inside bolt isv in its protracted position, except the key which is so constructed that its bitpwill clear the ward. This key is usually the one possessing the highest order of 'theentireseries of the keys with which the lock is provided. I accomplish this. object by providing the inside bolt 1'2 with what I term a floating ward 20,

' formed upon-.the rear end thereof and projecting laterally therefrom, sothat when the boltxupon. which it is formed is protracted, the ward lies in the path or are through which the bit of the outside key must be swungsinorder to bring the same into operating engagement with the talons of: the bolt 11. The ward QO-preferably consists. ot-a flange20 positioned to have sliding engagement withone wallzof the case 10 and of a second flange 20 formed. integral with the first flange and extending at right angles thereto. The flange 20': is; provided. with oneor moreslots21, which are so formed that they will permit: the bit of. the key: 13 to passtherethrough-when the bolt 12 ispro- 1 .tracted, blltsWllhPIQVGIlt any other key of the entire serieswith which-the lock may be provided-froinbeingrotatedafter the same has beeniinserted inthe-key hole from the outside ofthe door. It should benoted that the floating ward 20- is-not merelya lug or similar, projectionw hich is adapted to contact with the lowerend of the bit, in orderv to prevent, a key, the lower edge of. which does not clear the lug, from being; rotated in the look when the inside bolt is protracted, but that this. ward lies-in aplane at substantially right angles; to ,theaxisofthe bolt 12andextends substantially across. the width of the case 10, the arrangement being such that, when the; bolt,12 is: protracted, no key in serted in the key hole from the outside of the door, no matter Whaushape-it may: possess, can be rotated in-the lock unless the bit of the same is cut so that the projecting portions I o f the. samewill pass through the slots 21.

In Fig. 6 otthe drawing, I have shown the key I have used to represent-the highest order; of the entire series with which the lock may be provided, which keyis usually called the emergency master key, and in Fig, 7 I have shown thejkey-13', possessing the next highest order of the series, and which is usually termed the grand master key. It will be, apparent, from an inspectionoI'I igs; 6. and 7 that the emergency master; key could be, rotated, but that the grand master key, which ;is, the next highest key. in the order,

, ould not e. tat in. t ck t p otrac the bolt 11 when the inside bolt 12 has been protracted, as the L-shaped portions formed upon the outer edge of the bit would prevent the same from passing through the slots 21 formed in the floating ward 20.

From the above description, it will be apparent that when a person has locked himself in a room possessing the type of lock herein described, no one will be able to unlockv thedoor from the outside of the same,

except the person possessing the key which is particularly desi ned for this burpose, and that the other keys of the series with which thelock may be provided will not pass the ward, 20. This key, when a lock provided with the same is mounted upon the door-of the guest chamber-of ahotel, is kept in the-possession of some thoroughly reliable person, such as the manager or desk clerk of the hotel;

VVhatI- claim is:

1. Incombination, in a multiple key lock, a: plurality of; dead bolts, a vfloating ward formed upon the rear portion of one of said bolts, said ward having slotted clearance spaces formed therein to permit the bit of but; one key'ot the series to pass the ward.

2. In combinatiolnlin a multiple key lock, inside andoutside bolts, a-wardiformed upon the rear. portion of. said inside bolt, said wardiformed to lie substantially in a plane transverse-tothe axis of the inside bolt and constructedito permit one key of the series ofi'multiple keys to be rotated in the outside key: hole but to prevent the other keys of the series from rotating therein when the, bolt upon;which the ward is formed is protracted.

3. Incombination, in a multiple key lock, inside-and outside dead bolts, a ward formed upon saidinside bolt, said ward positioned to lie-inrthe; patlrof rotation of the outside keywhen the inside bolt is protracted and constructed to permit the bit of only one key. of the-seriesof multiple keys to pass said ward when theinside bolt is protracted.

4, In combination, in a multiple-key look, inside and outside dead bolts, award formed uponsaidinside bolt, said ward positioned to.lie, in thepathbf rotation of the outside key when the inside bolt is protracted, said ward having clearance slots formed therein andipositioned to permitthe bit of only one keyoftheseriesof multiple keys to pass saidwa-rd ,when the inside bolt is protracted.

5. In combination, in a multiple key look, inside and outside bolts, a ward formed upon saidinside bolt, said ward positioned to lie inthe path of rotationvof the outside key when the inside bolt is protracted and provided; witha. portion extending substantially in a plane transverse to the axis of the inside bolt, said portion. being constructed to permit the bitsof some of the keys 1 ofv the series of multiple keys to vpass said ward but to prevent the remaining keys from passing when the inside bolt is protracted.

6. In combination, in a multiple key lock, a lock case having a key hole, bolts in said case, a slotted ward formed upon one of said bolts, said ward positioned to be moved into close proximity to said key hole when the bolt is carrying the same protracted, and removed therefrom when said bolt is retracted, whereby a key inserted in said key hole can not be rotated therein when the bolt carrying said ward is protracted unless the bit will pass through the slot formed in said ward.

7. In combination, in a multiple key lock, a case having a key hole, inside and outside bolts in said case, a ward formed upon one of said bolts havin a portion extending sub stantially across t e interior of said lock, said ward being positioned to be moved into close proximity to said key hole when the bolt carrying the same is protracted and removed therefrom when said bolt is retracted, whereby a key can not be rotated in said key hole when the bolt carrying said ward is protracted unless its bit is cut to clear said ward.

8. In combination, in a mortise look, a

Copies of this patent may be obtained for plurality of dead bolts, said lock having a key-hole positioned to receive a key to operate one of said bolts, a floating ward upon another bolt projecting laterally therefrom and lying substantially across the interior of said lock, said ward positioned to block the rotation of a plurality of keys within said key-hole when said ward carrying bolt is moved to one position and to clear the rotation of said keys when said bolt is moved to another position.

9. In combination, in a mortise look, a plurality of dead bolts, said lock having a key-hole positioned to receive keys to operate one of said bolts, a floating ward upon another bolt projecting laterally therefrom, said ward positioned to be moved to a position adjacentsaid key-hole but to one side of the same when the bolt carrying the same is protracted and to be moved out of the path of the keys when said bolt is retracted, whereby keys may be inserted Within said key-hole when said ward carrying bolt is protracted but cannot be rotated therein unless they are cut to clear said ward.

In testimony whereof I have hereunto set my hand on the 26 day of January, 1918.

JOHN H. SHAW.

five cents each, by addressing the Commissioner of Patents, Washington, D. G.

Corrections in Letters Patent Ne E,,302,863.

It is hereby certified that in Letters Iatent N 0. 1,302,863, granted May 6, 1919, upon the application of John H. Show, of N ewiHIaven, Connecticut, for an improvement in Locks, errors appear in the printed specification requiring correction as follows: Page 3, line 9, cleim 6, strike out the Word is same page, line, and claim, before the Word protracted insert the word is; and that the said Letters Patent should be read with these corrections therein that the same may conform to the record of the case in the Patent Ofiice.

Signed and sealed this 3d day of June, A. D., 1919.

[sEAL.] J. T. NEWTON,

' Commissioner of Patents. CI. 70-74. 

